The ultimate Ford Mustang -- Shelby GT500 -- raises the bar high on performance with the introduction of the new 2013 model that goes on sale next year delivering 650 horsepower and a top speed of more than 200 mph.

Most celebrations of Chevrolet's centennial surround the automaker's production vehicles. Why not? After all, this is the brand that birthed legends like the Bel Air, Corvette, and Camaro, among others. Those vehicles are certainly worth celebrating, but we can't help but wonder: what about the Chevrolet cars that never saw a production line? We've scoured through the history books (and our memory banks) to pick out ten of our all-time favorites.